MESON Chess Problem Database

Problem Display
PID: 139768 (5R2/3N4/B1K5/2B1p3/3NkP1n/R7/6n1/8 w - - 0 1)

Veders, Visvaldis M

Shakhmaty v SSSR, 1949

5R2/3N4/B1K5/2B1p3/3NkP1n/R7/6n1/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Bd3#
    • 1...Sxf4
      • 2.Sf6#
    • 1...exf4
      • 2.Re8#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Bb7#
      • 1...Sxf4
        • 2.Sf6#
      • 1...Se3
        • 2.Bd3#
      • 1...Sf5+!
    • 1.Se2?
      • threat
        • 2.Sg3#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sf5
        • 2.Sf6#
      • 1...exf4!
    • 1.Sf3?
      • threat
        • 2.Sd2#
        • 2.Sg5#
      • 1...Sxf3
        • 2.Bd3#
      • 1...Sf5!
    • 1.Sb5?
      • threat
        • 2.Sd6#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sf5!
    • 1.Bc4?
      • threat
        • 2.Bd5#
      • 1...Sxf4
        • 2.Sf6#
      • 1...Se3
        • 2.Bd3#
      • 1...Sf5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sg5#
      • 1...Sf3
        • 2.Bd3#
      • 1...Sf5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(a);SBLOCK::B(E)
    • S(a);SBLOCK,XP(C)::S(G)
    • P(d);OGATEB,SBLOCK,XP(C)::R(H)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • B(E)
      • Vars
        • S(a);SBLOCK,XP(C)::S(G)
        • S(a);SBLOCK::B(E)
      • Refutation
        • S(c);CHECK
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(a);N_GUARD::R1(A),XS(a)
        • S(c);SBLOCK::S(G)
      • Refutation
        • P(d);XP(C)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);SBLOCK,XS(B)::B(E)
      • Refutation
        • S(c);
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(a);N_GUARD::R1(A),XS(a)
      • Refutation
        • S(c);
    • Try
      • B(E);
      • Threat
        • B(E)
      • Vars
        • S(a);SBLOCK,XP(C)::S(G)
        • S(a);SBLOCK::B(E)
      • Refutation
        • S(c);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • S(c);SBLOCK::B(E)
      • S(c);SBLOCK::S(G)
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